Newton's Third Law

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is an action-reaction pair?

Back

A pair of forces that are equal in size, opposite in direction, and act on two different objects.

Front

How does the action-reaction principle apply to the Earth and the Moon?

Back

The Earth pulls on the Moon, and the Moon pulls on the Earth, demonstrating an action-reaction pair.

Front

Why can't you push a car's windshield to move the car if it runs out of gas?

Back

Because the car needs an outside force exerted on it to move, not just a force from inside.

Front

What happens when a force is exerted on a large mass compared to a small mass?

Back

The same force produces less acceleration on a large mass than on a small mass.

Front

What propels a rocket in space?

Back

The force of the exhaust gases pushing against the rocket.

Front

What is the reaction force when a dog touches a ball?

Back

The ball touching the dog.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

How does mass affect acceleration according to Newton's Second Law?

Back

Acceleration is inversely proportional to mass when the same force is applied.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma).